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प्रश्न
State the observation for the following, when:
Concentrated sulphuric acid is added to carbon.
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उत्तर
Sulphuric acid is a strong oxidising agent. When it is added to carbon it oxidises carbon and the evolution of colourless gas are observed. This gas is carbon dioxide along with sulphur dioxide gas. The reaction is given as:
\[\ce{C + 2H2SO4 -> CO2↑ + 2H2O + 2SO2↑}\]
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संबंधित प्रश्न
Comment, sulphuric acid is referred to as oil of vitriol.
Give reasons for the following:
A piece of wood becomes black when concentrated sulphuric acid is poured on it.
What would you observe in the following case?
100ml of 98% sulphuric acid is kept open.
Some properties of sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reaction (a) to (e). Some properties may be repeated.
A. Acid
B. Dehydrating agent
C. Non-volatile acid
D. Oxidizing agent
(a) \[\ce{C12H22O11 + nH2SO4 -> 12C + 11H2O + nH2SO4}\]
(b) \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\]
(c) \[\ce{NaCl + 2H2SO4 -> NaHSO4 + HCl}\]
(d) \[\ce{CuO + 2H2SO4 -> CuSO4 + H2O}\]
(e) \[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2}\]
Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the sulphur.
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Active metal + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Sulphide + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
Arrange the following as per the instruction given in the bracket:
Sulphuric acid, Phosphoric acid, Acetic acid (increasing order of number of replaceable H atoms per molecule).
Identify the following:
The element having electronic configuration 2, 8, 6.
What property of Sulphuric acid is exhibited in the following case?
In the preparation of HCI gas when it reacts with Sodium chloride.
